Machine for applying box-fasteners.



P. H. LETTRE.

MACHINE PoR APPLYING BOX PASTENERS.

APPLICATION FILED MAR. 22, 1909. I 934,738, Patented Sept. 21, 1909.

PHILIP H. LETTR, F ATTLEBORO FALLS, MASSACHUSETTS.

MACHINE FOR APPLYING BOX-FASTENERS.

Specification of Letters Patent.

Application filed March 22, 1909.

Patented Sept. 21, 1999.

Serial No. 484,847.

To all whom it may concern:

Be it known that I, PHILIP H. LETTR, a citizen of the United States,residing at Attleboro Falls, in the county of Bristol and State ofMassachusetts, have invented a new and useful Means for Applying Box-Fasteners, of which the following is a specilication.

This invention relates to machines for securing fasteners of that typedisclosed in Patent No. 791,198, granted to me on May 30th, 1905.

The object of the invention is to provide a simple form of machine ofthis character by means of which the fastener can be properly held whilebeing applied to a cardboard box or the like, simple means beingutilized whereby the prong of the fastener is caused to bend in thedesired direction during the clamping operation.

A further object is to provide a machine of this class which can bereadily attached to a desk or table or other supporting structure andwhich is provided with a gage of novel form for holding the boxes andthe like in proper positions with relation to the clamping members ofthe device.

Vith these and other objects in view the invention consists in certainnovel details of construction and combinations of parts hereinafter morefully described and pointed out in the claims.

In the accompanying drawings the preferred form of the invention hasbeen shown.

In said drawings :-Figure 1 is a perspective view of a machine embodyingthe present improvements. Fig. 2 is a longitudinal section through theplunger and its supporting arm. Fig. 3 is a vertical section through thelower supporting arm of the machine, showing the die therein inelevation. Fig. 4 is a view, partly in elevation and partly in section,of the plunger and die, the same being shown in the positions assumed bythem immediately prior to the clamping action. Fig. 5 is a similar viewshowing the positions of the parts with the fastener clampedtherebetween. Fig. 6 is a perspective view of one of the fasteners.

Referring to the figures by characters of reference 1 designates astandard having an ear 2 extending from the bottom portion thereof andconstituting a base, this ear being provided with a series of apertures3 for the reception of screws or other securing devices. A lower arm 4extends from the lower end of the standard 1 and has its free endupturned as indicated at 5 so as to constitute a seat for a die G. Anopening 7 extends vertically through this upwardly extending' portion ofthe arm` and receives the stem 8 of the die G, said stem being securedin position in any preferred manner, as by means of a set screw 9. Theupper face of the die is provided with a transverse groove 10 concavedtransversely, and upstanding' from the inner edge of the die are spacedears 11. An opening l2 extends transversely through the upstandingportion 5 of the lower arm, and this opening is designed to receive aspindle 13 having a disk 14 at one end. Said disk and spindle constitutea gage for the purpose of holding boxes and the like in proper positionupon the die, and the spindle is designed to be secured in any positionto which it may be adjusted by means of a set screw 15.

Extending from the standard 1 and above the arm 4 is an arm 16 having ahead 17- at its free end through which extends a guide opening 18. Acylindrical plunger 19 is mounted to reciprocate within this opening.the upper end of the plunger being forked as indicated at Q0 andpivotally connected to a lever 21. This lever is mounted at one end uponthe upper end of the standard 1, while its other end is provided with ahandle 22. A spring 23 extends around the plunger 19 and bears at itsends against the head 17 and the forked end 20 of the plungerrespectively, thus serving to hold the plunger normally elevated. Theupward movement of the plunger 19 is designed to be limited by the innerend of the slot in fork 90 of said plunger moving against the lever 21.

Arranged eccentrically within the lower end of the plunger 19 is a bore24, in which is slidably mounted a rod 25, there being a coil spring 26interposed between this rod and the inner end of the bore so as to holdthe rod normally projected below the plunger 19. A disk 33 is securedupon the end of the plunger and has a substantially semi-circularopening 34 therein for the reception of a guide finger 35 tapereddownwardly toward its free end and having one flat face. The flat faceof this finger is disposed in a plane extending through the outerlongitudinaliv edgey portion. off thev groove 10 will be clearlyapparent by referringto- Figs. 4 and 5 of the drawing. l

The fastener to be used in connection with this machine has beenshowfn'iinidetail in Fig;V G. This fastener' is of the type disclosedyinl myA patent hereinbefore mentioned` and con sists of aU-shapedimember 27 formed at one end of an imperforate member 28', saidimperforate member having a prong 29 at one endtt-hereof and slightly`curvedin the direction of" the U-shaped2 member 27, while a tongue 30extends fromfthe otherl endlofi the ilnperforate member-'28, and underand beyond the member 27. Any opening' 3lis formed iii-said Ushapedmember at such a point` that when the two members 27. and 28 arepressedtogether the prong 29 will" enter. the opening- 3l andcan'beloeped-about.y that portion of the member 27'int'erposed betweenthe openingA 31 and the inneredge ofi' the member 27.

In using the device herein described the edge ofl the card-board boxv orthe like to whicli'the fastener' isto'be secured is placed between themembers 27-and 28 ofthe clip and said members pressed slightly towardeach other sothatthe point of the prong will not contact: withtheinserted:card-board, whichl isindicated atE 32'. The fastener is thenplaced upon the die G andi with the member 27 lowermost while theVtongue 30 extends between thel ears ll and is held againstv lateraldisplacement' thereby. The Cardi-board then inserted between the members27 and 28: as indicated in Fig. 4', andE the plunger 19 forceddownwardly by means ofthe lever 2li. rBhe lingen 35 will move: againstthe convex face of the prong 2f) asshown inl Fig. 4 and will finallycome into contact with the card-board 32, the pl ung-er: 19 ffollowing-v the linger. and pushing the prong 29 through the card-board'and intothe groove l0.'y Before tlieprong enters the groove it mustfirst pass through the openingf 31 in the member 27' and when-itcomesintol contact with the curvedfbottom of'tlie' groove saidbottomwillcurl' the prong upwardly aroundIt-he inner edge of the member 27 andpress thepoints of the prong into the. card-board. as1shownin Fig. 5;During t-he clamping action of the plunger' 19 the lfinger 35 mov-esbackintothe bore 24; and the edge of the card-board will of course :restwithin the fold: of the fastener and the tongue 30 will thus projectbeyond the edge and, ifthevsfastener is attached to the edge lportion ofthe wall of the card-board box lthis tongue 30 can be pushed through thevcover of the box and by folding it or bending it inwardly' it' will;operate to securely fastenthe cover in place. y

It-l is ofcourse tofbe understood that after abomorltlie like has beenproperly marked to' iindieatethefposition) where the fastener is to` befplaced' the gage disk. 14a is adjusted there-against and:y secured? bymeans of set screw 115... rllhis gage can subsequently be used, for;yindicating; the proper;y points at which. additional' boxes etc.,. aretobe placed upon the die.

Obviously various changes may be made in: the' construction and:arrangement, ofl the vparts witlioutf. depaiting` fromVV the spirit orsacrificing the advantages of the invention.

What' is. claimed is:-

ma'chine 'for applying box-fasteners `and the like,y comprisingconnectedf, upper and lower arms, a' stationaryy clamping! memberremovably mountedupon. the'lowen arm and having; a detlecting surface5 aspringsupportedy clamping memberl movably mounted within:- the upperanni and.` having' an: eccentric longitudinal bore, anf aperturedI diskreL movably connected to V one end' of; saidf member, a spring pressed".element slidably mounted withinitlie bore-'and normally bearing:againstA said disk-,a=v guiding finger extending; from said; element;and through the disk,I and an. actuating; devicev connected to theclamping member for successively movingithe finger.' and? disk into#contact with: the stationary clamping; member.

In testimony that I claim the foregoing as-myf own,L Iy have yheretoaliixed my signature in the presence oftwo witnesses.-` ,Y

PHILIP H..LETTRE.

Wfitnesses:

EREDB; BYRAMS JOHN GHASz. AL Dmnn.

